111101221210220 has 24 divisors (see below), whose sum is σ = 240838776302208. Its totient is φ = 43006924339200.

The previous prime is 111101221210211. The next prime is 111101221210229. The reversal of 111101221210220 is 22012122101111.

It is an interprime number because it is at equal distance from previous prime (111101221210211) and next prime (111101221210229).

It is not an unprimeable number, because it can be changed into a prime (111101221210229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89597758421 + ... + 89597759660.

It is an arithmetic number, because the mean of its divisors is an integer number (10034949012592).

Almost surely, 2^{111101221210220} is an apocalyptic number.

111101221210220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111101221210220 is an abundant number, since it is smaller than the sum of its proper divisors (129737555091988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111101221210220 is a wasteful number, since it uses less digits than its factorization.

111101221210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179195518121 (or 179195518119 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111101221210220 its reverse (22012122101111), we get a palindrome (133113343311331).

The spelling of 111101221210220 in words is "one hundred eleven trillion, one hundred one billion, two hundred twenty-one million, two hundred ten thousand, two hundred twenty".